uggghh.....
I hate the color printer firmware, it is so sensitive.
It sounds like you might have to do a firmware rewrite on it, this is not for the faint of heart.
I had someone about 8 years ago try to show me how to do it, and he killed 3 boards on a 2060, did i get a sorry? Not, he left town.
Sorry, that still bugs me, $3k in circuit boards later. Anyway, i would have someone who is better than i am talk you through it.